Privacy Policy

This policy explains which calculations stay in your browser, which settings may be saved on your device, and which analytics and advertising services can receive technical usage data when you visit the site.

Calculator inputs

Time, date, duration, rate, and similar values entered into the calculators are processed by the page in your browser. The calculator code does not intentionally send those input values to our server, Google Analytics, Microsoft Clarity, or an advertising provider. Do not enter confidential personal, payroll, or health information into a calculator.

Storage on your device

• Core time conversions and calculations run client-side.
• Some tools use local storage when you save bookmarks, remember calculator settings, or keep stopwatch state.
• Clipboard and file-export actions happen only when you select the corresponding control.
• You can clear saved tool settings through the relevant reset control or your browser's site-data settings.

Analytics and advertising data

The site loads Google Analytics, Microsoft Clarity, and Google AdSense. Optional advertising placements may also use Adsterra when they are enabled. Those providers may process information such as:

• IP address, approximate location, browser, device, operating system, and screen size;
• pages viewed, referring page, timestamps, clicks, scrolling, and other interaction events;
• cookies, local storage identifiers, or similar technologies used for measurement, fraud prevention, and ad delivery.

These providers process data under their own policies and may combine it with other information available to them. Their handling of data is not the same as the browser-only calculation described above.

Third-Party Services

• Google's Privacy Policy covers Google Analytics and AdSense processing.
• Microsoft's Privacy Statement covers Microsoft Clarity.
• Adsterra's Privacy Policy applies when optional Adsterra placements are enabled.

Browser privacy controls, content blockers, and provider opt-out tools may limit cookies or measurement. Blocking these services should not change the arithmetic performed by the calculators.

Security and retention

The site is delivered over HTTPS. No internet service can promise absolute security. Analytics and advertising retention periods are controlled by the applicable provider settings and policies; locally saved tool data remains in your browser until you or the tool removes it.

Changes to This Policy

We may update this policy when the site's tools or service providers change. Material revisions will be reflected in the date shown on this page.

Contact Us

If you have any questions about this Privacy Policy, please contact us through our contact page.